Validate method
      
void
Validate()
      
     
    
Implementation
void Validate() {
  for (PropertyDefinition propertyDefinition in this._addedProperties) {
    this.ValidatePropertyValue(propertyDefinition);
  }
  for (PropertyDefinition propertyDefinition in this._modifiedProperties) {
    this.ValidatePropertyValue(propertyDefinition);
  }
}