public byte[] getCrc32Bytes() {
		return ByteBuffer.allocate(4).order(ByteOrder.BIG_ENDIAN).putInt(crc32).array();
	}
Reads in the bytes of a PNG chunk from a given
BinaryReader
@param reader
@throws IOException
Ghidra/Features/FileFormats/src/main/java/ghidra/file/formats/ios/png/PNGChunk.java