public boolean isReference() {
    return (basicType == BT_OBJECT);
  }
Gets whether this type is a normal reference type. A normal reference type is a reference type
that is not a return address. This method is just convenient shorthand for {@code
getBasicType() == Type.BT_OBJECT}.

@return whether this type is a normal reference type
android/android_framework/dex-maker/src/main/java/com/android/dx/rop/type/Type.java