public boolean isCollection() {
   return isInstanceOf(TypeMirrorUtils.collectionTypeErasure(this.env));
 }
 public boolean isInstanceOf(Class<?> clazz) {
   return isInstanceOf(TypeMirrorUtils.mirrorOf(clazz, this.env));
 }
 public boolean isInstanceOf(String typeName) {
   return isInstanceOf(TypeMirrorUtils.mirrorOf(typeName, this.env));
 }
 public boolean isList() {
   return isInstanceOf(TypeMirrorUtils.listTypeErasure(this.env));
 }