code: public GitlabSSHKey getSSHKey(Integer keyId) throws IOException {
          String tailUrl = GitlabSSHKey.KEYS_URL + "/" + keyId;
          return retrieve().to(tailUrl, GitlabSSHKey.class);
      }
docs: Get key with user information by ID of an SSH key.
  
  @param keyId The ID of an SSH key
  @return The SSH key with user information
  @throws IOException on gitlab api call error