code: function reportUnexpectedUnnamedFunction(node) {
              context.report({
                  node,
                  messageId: "unnamed",
                  data: { name: astUtils.getFunctionNameWithKind(node) }
              });
          }
docs: Reports that an unnamed function should be named
  @param {ASTNode} node - The node to report in the event of an error.
  @returns {void}