code: public GitlabSSHKey createPushDeployKey(Integer targetProjectId, String title, String key) throws IOException {
          return createDeployKey(targetProjectId, title, key, true);
      }
docs: Create a new deploy key for the project which can push.
  
  @param targetProjectId The id of the Gitlab project
  @param title           The title of the ssh key
  @param key             The public key
  @return The new GitlabSSHKey
  @throws IOException on gitlab api call error