Modifications to generated thrift allow Echoer service definition
to remain unchanged.
ThriftServer using go-thrift generated Thrift services and clients. Works if
RPC style or RPC Strict style options for github.com/dghubble/go-thrift are
used.
Going forward, ThriftServer will not use generated services or clients. For
the strict Go style service methods this library is concerned with, generated
services and clients are not needed, only generated structs/messages.