code: function(name, options) {
    name = defaultValue(name, "Conditions");
  
    options = defaultValue(options, defaultValue.EMPTY_OBJECT);
    DisplayVariablesConcept.call(this, name, options);
  }
docs: Represents the top-level node of a tree which should be displayed using
  a different UX to the more usual DisplayVariablesConcept.
  Intended for use when the tree is huge, and would take up too much space in the UI.
  Contains an items array of Concepts.
  
  @alias SummaryConcept
  @constructor
  @extends DisplayVariablesConcept
  @param {String} [name='Conditions'] Display name of this concept.
  @param {Object} [options] Options, as per DisplayVariablesConcept.