spring-projects/spring-integration — pull request #1004 by garyrussell (2013-12-13 18:48:30+00:00)
Title: INT-3235 Make GatewayMethodMetadata Public

Unable to programmatically wire header expressions or method-specific
properties into a GatewayProxyFactoryBean.

The GPFB has public methods that take arguments of
this type.

Make the class public instead of package-protected.

Add a test case.