Github user mcgilman commented on the issue: https://github.com/apache/nifi/pull/1136 Our use of swagger is simply for generating the documentation. The swagger.json is generated into the target directory and is not made available as part of the released source or convenience binaries. I think the issue here is the inability of Swagger to understand the use of JAXB adapters. These values are String's already as the adapters support (un)marshalling them. I would guess that Swagger is simply reading the type of the property as a `java.util.Date` and marking it a date-time. I would suggest we update the `ApiModelProperty` annotation of all fields that use any JAXB adapters to accurately reflect the actual data type a client can expect. It looks like there is a dataType field in the annotation. I'm not certain but I would expect this to override the data type in the method signature.
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