* add direct invocation methods for java (httpclient)
* add direct invocation methods for java (resttemplate)
* handle methods only if endpoints exist for api client
* preserve previous newline to minimize changes
* update httpclient/resttemplate samples
* add common methods in base class
* regenerate samples with base class
The EOL is missing so let's add it in order to comply with POSIX standard:
Line
> A sequence of zero or more non- <newline> characters plus a terminating <newline> character.
