private int getBitmapSize() {
		if (num_methods_ == 0) {
			return 0;
		}
		int size = (int)NumericUtilities.getUnsignedAlignedValue(num_methods_, 32);
		return size / 8;
	}
Computes the number of bytes required to store the bitmap.
@return the number of bytes required to store the bitmap
Ghidra/Features/FileFormats/src/main/java/ghidra/file/formats/android/oat/oatclass/OatClass_S_T.java