Add Missing Methods for Integrations

[Cliftonz]

Some endpoints of the following section can't be hit from this SDK.

We would like to ensure that all endpoints can be hit. For this issue, we would like to build out the Integrations

Some of these methods may already exist. 
If so no need to change/update them, just point out that they already exist and we will close the issue.

This is just to bring every SDK we have on par with all the methods available.

Check all the endpoints here and add the missing ones.

[sccalabr]

id like to give this a try

[sccalabr]

How do I find integrations and how do I hit endpoint? The contributing section didnt mention how to run this

Also when I try to run tests I get this error

==> earmark_parser
Compiling 1 file (.yrl)
/usr/lib/erlang/lib/parsetools-2.3.2/include/yeccpre.hrl: no such file or directory
could not compile dependency :earmark_parser, "mix compile" failed. You can recompile this dependency with "mix deps.compile earmark_parser", update it with "mix deps.update earmark_parser" or clean it with "mix deps.clean earmark_parser"

any idea what this would happen? it is a clean checkout