public int getFamily() {
    return family;
  }
Gets the opcode family. The opcode family is the unmarked (no "/...") opcode that has
equivalent semantics to this one.

@return {@code Opcodes.MIN_VALUE..Opcodes.MAX_VALUE;} the opcode family
android/android_framework/dex-maker/src/main/java/com/android/dx/dex/code/Dop.java