code: function setSafeProperty (object, prop, value) {
    // only allow setting safe properties of a plain object
    if (isPlainObject(object) && isSafeProperty(object, prop)) {
      object[prop] = value
      return value
    }
  
    throw new Error('No access to property "' + prop + '"')
  }
docs: Set a property on a plain object.
  Throws an error in case the object is not a plain object or the
  property would override an inherited property like .constructor or .toString
  @param {Object} object
  @param {string} prop
  @param {*} value
  @return {*} Returns the value
   TODO: merge this function into access.js?