chore: Rework event type generation to support spec splitting

Author: stainless-app[bot]

.stats.yml

@@ -1,4 +1,4 @@
 configured_endpoints: 176
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/lithic%2Flithic-64e9dd6979ae45f1bb6e77b40e8244ee46673332112ebf33fe2f3a287467ce85.yml
-openapi_spec_hash: ce885445b66e95c5671ee72c01882d79
-config_hash: 07f0e0f3036a4a5825cee527bc46b0b6
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/lithic%2Flithic-6e800837b020104545778d65b7b16bae277e6667d98044e83f3bfeacebdb489b.yml
+openapi_spec_hash: 94788968e119e8665a1b0d4742565984
+config_hash: 2af43c32faa12490c9c9caa2ce62bccb

lithic-java-core/src/main/kotlin/com/lithic/api/models/PaymentCreateParams.kt

@@ -1097,7 +1097,7 @@ private constructor(
             @JsonProperty("sec_code")
             @ExcludeMissing
             secCode: JsonField<SecCode> = JsonMissing.of(),
-            @JsonProperty("ach_hold_period")
+            @JsonProperty("ach_hold__period")
             @ExcludeMissing
             achHoldPeriod: JsonField<Long> = JsonMissing.of(),
             @JsonProperty("addenda") @ExcludeMissing addenda: JsonField<String> = JsonMissing.of(),
@@ -1115,7 +1115,7 @@ private constructor(
          * @throws LithicInvalidDataException if the JSON field has an unexpected type (e.g. if the
          *   server responded with an unexpected value).
          */
-        fun achHoldPeriod(): Optional<Long> = achHoldPeriod.getOptional("ach_hold_period")
+        fun achHoldPeriod(): Optional<Long> = achHoldPeriod.getOptional("ach_hold__period")
 
         /**
          * @throws LithicInvalidDataException if the JSON field has an unexpected type (e.g. if the
@@ -1136,7 +1136,7 @@ private constructor(
          * Unlike [achHoldPeriod], this method doesn't throw if the JSON field has an unexpected
          * type.
          */
-        @JsonProperty("ach_hold_period")
+        @JsonProperty("ach_hold__period")
         @ExcludeMissing
         fun _achHoldPeriod(): JsonField<Long> = achHoldPeriod