code: function report(node) {
  			var parent = context.getAncestors().pop();
  
  			context.report(node, parent.type === "Program" ?
  				ProblemMessages.noLoneBlock :
  				ProblemMessages.noLoneNestedBlock
  			);
  		}
docs: Reports a node as invalid.
  @param {ASTNode} node - The node to be reported.
  @returns {void}