code: function _isCpGetter2(node) {
    if (node.type !== "FunctionExpression") {
      return false;
    }
    var parent = node.parent;
    if (parent.type !== "CallExpression") {
      return false;
    }
    var callee = parent.callee;
    if (callee.type === "Identifier" && callee.name === "computed") {
      return true;
    }
    if (callee.type === "MemberExpression") {
      var caller = n.getCaller(callee);
      return caller === "Ember.computed" || caller === "Em.computed";
    }
    return false;
  }
docs: Try to detect computed property's body like part of
  <pre>
  computed('a', 'b', function () {
  // ...
  });
  </pre>
  
  @param {ASTNode} node
  @returns {boolean}
  @private