public boolean canThrow() {
    return insns.getLast().canThrow();
  }
Returns whether this block might throw an exception. This is just a convenient shorthand for
{@code getLastInsn().canThrow()}.

@return {@code true} iff this block might throw an exception
android/android_framework/dex-maker/src/main/java/com/android/dx/rop/code/BasicBlock.java