message: fix(implementsPlugin): check if reflection has children
diff: @@ -38,6 +38,11 @@ export class ImplementsPlugin extends ConverterComponent
  }
  var classMember:DeclarationReflection;
  +
  + if (!classReflection.children) {
  + return;
  + }
  +
  for (var index = 0, count = classReflection.children.length; index < count; index++) {
  var child = classReflection.children[index];
  if (child.name != interfaceMember.name) continue;
  