code: public DeployKey getDeployKey(Object projectIdOrPath, Integer keyId) throws GitLabApiException {
  
          if (keyId == null) {
              throw new RuntimeException("keyId cannot be null");
          }
  
          Response response = get(Response.Status.OK, null,
                  "projects", getProjectIdOrPath(projectIdOrPath), "deploy_keys", keyId);
          return (response.readEntity(DeployKey.class));
      }
docs: Get a single deploy key for the specified project.
  
  <pre><code>GitLab Endpoint: GET /projects/:id/deploy_keys/:key_id</code></pre>
  
  @param projectIdOrPath the project in the form of an Integer(ID), String(path), or Project instance
  @param keyId the ID of the deploy key to delete
  @return the DeployKey instance for the specified project ID and key ID
  @throws GitLabApiException if any exception occurs