public function wp_getRevisions( $args ) {
		if ( ! $this->minimum_args( $args, 4 ) ) {
			return $this->error;
		}

		$this->escape( $args );

		$username = $args[1];
		$password = $args[2];
		$post_id  = (int) $args[3];

		if ( isset( $args[4] ) ) {
			$fields = $args[4];
		} else {
			/**
			 * Filters the default revision query fields used by the given XML-RPC method.
			 *
			 * @since 3.5.0
			 *
			 * @param array  $field  An array of revision query fields.
			 * @param string $method The method name.
			 */
			$fields = apply_filters( 'xmlrpc_default_revision_fields', array( 'post_date', 'post_date_gmt' ), 'wp.getRevisions' );
		}

		$user = $this->login( $username, $password );
		if ( ! $user ) {
			return $this->error;
		}

		/** This action is documented in wp-includes/class-wp-xmlrpc-server.php */
		do_action( 'xmlrpc_call', 'wp.getRevisions' );

		$post = get_post( $post_id );
		if ( ! $post ) {
			return new IXR_Error( 404, __( 'Invalid post ID.' ) );
		}

		if ( ! current_user_can( 'edit_post', $post_id ) ) {
			return new IXR_Error( 401, __( 'Sorry, you are not allowed to edit posts.' ) );
		}

		// Check if revisions are enabled.
		if ( ! wp_revisions_enabled( $post ) ) {
			return new IXR_Error( 401, __( 'Sorry, revisions are disabled.' ) );
		}

		$revisions = wp_get_post_revisions( $post_id );

		if ( ! $revisions ) {
			return array();
		}

		$struct = array();

		foreach ( $revisions as $revision ) {
			if ( ! current_user_can( 'read_post', $revision->ID ) ) {
				continue;
			}

			// Skip autosaves
			if ( wp_is_post_autosave( $revision ) ) {
				continue;
			}

			$struct[] = $this->_prepare_post( get_object_vars( $revision ), $fields );
		}

		return $struct;
	}