Does pgsync support analysis ik tokenizer？I want to set fields during synchronization that require IK tokenization. How should I modify schema.json

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this is my schema.json:
[
{
"database": "agent",
"index": "agent_line_index",
"nodes": {
"table": "ai_line_info",
"schema": "public",
"columns": [
"line_id",
"line_name",
"line_type",
"voltage_level"
],
"transform": {
"line_name": {
"type": "text",
"analyzer": "ik_max_word",
"search_analyzer": "ik_smart",
"fields": {
"keyword": {
"type": "keyword",
"ignore_above": 256
}
}
}
}
}
}
]
When I execute on Kibana：GET /agent_line_index/_mapping ；The tokenizer is not working，May I ask if there are any issues with my schema.json format or syntax