code: function (typeSpecs, values, location) {
  	    checkReactTypeSpec(typeSpecs, values, location, this.getName(), null, this._debugID);
  	  }
docs: Assert that the context types are valid
  
  @param {object} typeSpecs Map of context field to a ReactPropType
  @param {object} values Runtime values that need to be type-checked
  @param {string} location e.g. "prop", "context", "child context"
  @private