Support QUERY method

[Goooler]

We can't name it to QUERY due to the case-insensitive file systems on MacOS and Windows. Should we rename the annotation to SEARCH or something else?

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• CHANGELOG.md's "Unreleased" section has been updated, if applicable.

[JakeWharton]

You can write it in Kotlin where the file name doesn't need to match the class name. The case collision isn't a problem for people consuming the jar.

[Goooler]

I tried, grouped @Query and @QUERY in the same kt file like:

@MustBeDocumented
@Target(
  AnnotationTarget.FUNCTION,
  AnnotationTarget.PROPERTY_GETTER,
  AnnotationTarget.PROPERTY_SETTER,
)
@Retention(AnnotationRetention.RUNTIME)
annotation class QUERY(
  val value: String = ""
)

@MustBeDocumented
@Target(AnnotationTarget.VALUE_PARAMETER)
@Retention(AnnotationRetention.RUNTIME)
annotation class Query(
  val value: String,
  val encoded: Boolean = false,
)

and ran gw assemble:

/Users/goooler/IdeaProjects/retrofit/retrofit/src/main/java/retrofit2/Converter.java:33: error: cannot find symbol
import retrofit2.http.Query;
                     ^
  symbol:   class Query
  location: package retrofit2.http

[Goooler]

We can't leave the single QUERY in the QUERY_METHOD.kt, as the generated QUERY.class still conflicts with Query.class. May need to add a new uber jar configuration to fix the classes bundling.

[Goooler]

I added a new source set and moved the QUERY.java into it to avoid the conflict.