diff --git a/src/main/java/leonardo/labutilities/qualitylabpro/controllers/analytics/AnalyticsHelperController.java b/src/main/java/leonardo/labutilities/qualitylabpro/controllers/analytics/AnalyticsHelperController.java
index 2b13567..68bb366 100644
--- a/src/main/java/leonardo/labutilities/qualitylabpro/controllers/analytics/AnalyticsHelperController.java
+++ b/src/main/java/leonardo/labutilities/qualitylabpro/controllers/analytics/AnalyticsHelperController.java
@@ -1,11 +1,10 @@
 package leonardo.labutilities.qualitylabpro.controllers.analytics;
 
-import jakarta.validation.Valid;
-import leonardo.labutilities.qualitylabpro.dtos.analytics.AnalyticsDTO;
-import leonardo.labutilities.qualitylabpro.dtos.analytics.GroupedMeanAndStdByLevelDTO;
-import leonardo.labutilities.qualitylabpro.dtos.analytics.GroupedResultsByLevelDTO;
-import leonardo.labutilities.qualitylabpro.dtos.analytics.UpdateAnalyticsMeanDTO;
-import leonardo.labutilities.qualitylabpro.services.analytics.AbstractAnalyticHelperService;
+import static org.springframework.hateoas.server.mvc.WebMvcLinkBuilder.linkTo;
+import static org.springframework.hateoas.server.mvc.WebMvcLinkBuilder.methodOn;
+import java.time.LocalDateTime;
+import java.util.List;
+import java.util.stream.Collectors;
 import org.springdoc.core.annotations.ParameterObject;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
@@ -15,16 +14,21 @@
 import org.springframework.hateoas.Link;
 import org.springframework.http.ResponseEntity;
 import org.springframework.transaction.annotation.Transactional;
-import org.springframework.web.bind.annotation.*;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.servlet.support.ServletUriComponentsBuilder;
 import org.springframework.web.util.UriComponentsBuilder;
-
-import java.time.LocalDateTime;
-import java.util.List;
-import java.util.stream.Collectors;
-
-import static org.springframework.hateoas.server.mvc.WebMvcLinkBuilder.linkTo;
-import static org.springframework.hateoas.server.mvc.WebMvcLinkBuilder.methodOn;
+import jakarta.validation.Valid;
+import leonardo.labutilities.qualitylabpro.dtos.analytics.AnalyticsDTO;
+import leonardo.labutilities.qualitylabpro.dtos.analytics.GroupedMeanAndStdByLevelDTO;
+import leonardo.labutilities.qualitylabpro.dtos.analytics.GroupedResultsByLevelDTO;
+import leonardo.labutilities.qualitylabpro.dtos.analytics.UpdateAnalyticsMeanDTO;
+import leonardo.labutilities.qualitylabpro.services.analytics.AbstractAnalyticHelperService;
 
 public class AnalyticsHelperController {
 	private final AbstractAnalyticHelperService analyticHelperService;
@@ -35,13 +39,13 @@ public AnalyticsHelperController(AbstractAnalyticHelperService analyticHelperSer
 
 	@GetMapping("/{id}")
 	public ResponseEntity<AnalyticsDTO> getAnalyticsById(@PathVariable Long id) {
-		return ResponseEntity.ok(analyticHelperService.findOneById(id));
+		return ResponseEntity.ok(this.analyticHelperService.findOneById(id));
 	}
 
 	@DeleteMapping("/{id}")
 	@Transactional
 	public ResponseEntity<Void> deleteAnalyticsResultById(@PathVariable Long id) {
-		analyticHelperService.deleteAnalyticsById(id);
+		this.analyticHelperService.deleteAnalyticsById(id);
 		return ResponseEntity.noContent().build();
 	}
 
@@ -49,14 +53,14 @@ public ResponseEntity<Void> deleteAnalyticsResultById(@PathVariable Long id) {
 	@Transactional
 	public ResponseEntity<List<AnalyticsDTO>> postAnalytics(
 			@Valid @RequestBody List<@Valid AnalyticsDTO> values) {
-		analyticHelperService.saveNewAnalyticsRecords(values);
+		this.analyticHelperService.saveNewAnalyticsRecords(values);
 		return ResponseEntity.status(201).build();
 	}
 
 	@PatchMapping()
 	public ResponseEntity<Void> updateAnalyticsMean(
 			@Valid @RequestBody UpdateAnalyticsMeanDTO updateAnalyticsMeanDTO) {
-		analyticHelperService.updateAnalyticsMeanByNameAndLevelAndLevelLot(
+		this.analyticHelperService.updateAnalyticsMeanByNameAndLevelAndLevelLot(
 				updateAnalyticsMeanDTO.name(), updateAnalyticsMeanDTO.level(),
 				updateAnalyticsMeanDTO.levelLot(), updateAnalyticsMeanDTO.mean());
 		return ResponseEntity.noContent().build();
@@ -67,7 +71,7 @@ public ResponseEntity<List<GroupedResultsByLevelDTO>> getGroupedByLevel(
 			@RequestParam String name, @RequestParam("startDate") LocalDateTime startDate,
 			@RequestParam("endDate") LocalDateTime endDate,
 			@PageableDefault(size = 100) @ParameterObject Pageable pageable) {
-		List<GroupedResultsByLevelDTO> groupedData = analyticHelperService
+		List<GroupedResultsByLevelDTO> groupedData = this.analyticHelperService
 				.findAnalyticsWithGroupedResults(name, startDate, endDate, pageable);
 		return ResponseEntity.ok(groupedData);
 	}
@@ -77,7 +81,7 @@ public ResponseEntity<List<GroupedMeanAndStdByLevelDTO>> getMeanAndDeviationGrou
 			@RequestParam String name, @RequestParam("startDate") LocalDateTime startDate,
 			@RequestParam("endDate") LocalDateTime endDate,
 			@PageableDefault(size = 100) @ParameterObject Pageable pageable) {
-		List<GroupedMeanAndStdByLevelDTO> groupedData = analyticHelperService
+		List<GroupedMeanAndStdByLevelDTO> groupedData = this.analyticHelperService
 				.calculateGroupedMeanAndStandardDeviation(name, startDate, endDate, pageable);
 		return ResponseEntity.ok(groupedData);
 	}
@@ -85,12 +89,13 @@ public ResponseEntity<List<GroupedMeanAndStdByLevelDTO>> getMeanAndDeviationGrou
 	public ResponseEntity<CollectionModel<EntityModel<AnalyticsDTO>>> getAllAnalyticsWithLinks(
 			List<String> names, @PageableDefault(size = 100) @ParameterObject Pageable pageable) {
 		Page<AnalyticsDTO> resultsList =
-				analyticHelperService.findAnalyticsPagedByNameIn(names, pageable);
+				this.analyticHelperService.findAnalyticsPagedByNameIn(names, pageable);
 
 		var entityModels = resultsList.getContent().stream()
-				.map(record -> createEntityModel(record, pageable)).collect(Collectors.toList());
+				.map(analyticsRecord -> this.createEntityModel(analyticsRecord, pageable)).toList();
 
-		var result = addPaginationLinks(CollectionModel.of(entityModels), resultsList, pageable);
+		var result =
+				this.addPaginationLinks(CollectionModel.of(entityModels), resultsList, pageable);
 		return ResponseEntity.ok(result);
 	}
 
@@ -98,7 +103,7 @@ public ResponseEntity<CollectionModel<EntityModel<AnalyticsDTO>>> getAnalyticsBy
 			List<String> names, LocalDateTime startDate, LocalDateTime endDate,
 			@PageableDefault(size = 100) @ParameterObject Pageable pageable) {
 
-		Page<AnalyticsDTO> analyticsRecordPaged = analyticHelperService
+		Page<AnalyticsDTO> analyticsRecordPaged = this.analyticHelperService
 				.findAnalyticsByNameInAndDateBetweenWithLinks(names, startDate, endDate, pageable);
 
 		if (analyticsRecordPaged == null) {
@@ -106,19 +111,21 @@ public ResponseEntity<CollectionModel<EntityModel<AnalyticsDTO>>> getAnalyticsBy
 		}
 
 		var entityModels = analyticsRecordPaged.getContent().stream()
-				.map(record -> createEntityModel(record, pageable)).collect(Collectors.toList());
+				.map(record -> this.createEntityModel(record, pageable))
+				.collect(Collectors.toList());
 
 		var collectionModel = CollectionModel.of(entityModels);
-		var result = addPaginationLinks(collectionModel, analyticsRecordPaged, pageable);
+		var result = this.addPaginationLinks(collectionModel, analyticsRecordPaged, pageable);
 
 		return ResponseEntity.ok(result);
 	}
 
-	EntityModel<AnalyticsDTO> createEntityModel(AnalyticsDTO record, Pageable pageable) {
-		return EntityModel.of(record, Link.of(ServletUriComponentsBuilder.fromCurrentContextPath()
-				.path("/backend-api")
-				.path(linkTo(methodOn(getClass()).getAnalyticsById(record.id())).toUri().getPath())
-				.toUriString()).withSelfRel());
+	EntityModel<AnalyticsDTO> createEntityModel(AnalyticsDTO analyticsRecord, Pageable pageable) {
+		return EntityModel.of(analyticsRecord,
+				Link.of(ServletUriComponentsBuilder.fromCurrentContextPath().path("/backend").path(
+						linkTo(methodOn(this.getClass()).getAnalyticsById(analyticsRecord.id()))
+								.toUri().getPath())
+						.toUriString()).withSelfRel());
 	}
 
 	private CollectionModel<EntityModel<AnalyticsDTO>> addPaginationLinks(