I am using retrofit1 old style
@GET(\"/loginUser\")
public Call login(
@Query(\"email\") String email,
@Query(\"
Retrofit 2.0.0-beta3 adds a converter-scalars module provides a Converter.Factory for converting String, the 8 primitive types, and the 8 boxed primitive types as text/plain bodies. Install this before your normal converter to avoid passing these simple scalars through, for example, a JSON converter.