private boolean isImage(Data data) {
		DataType dataType = data.getDataType();
		if (dataType instanceof PngDataType) {
			return true;
		}
		if (dataType instanceof GifDataType) {
			return true;
		}
		if (dataType instanceof BitmapResourceDataType) {
			return true;
		}
		if (dataType instanceof IconResourceDataType) {
			return true;
		}
		if (dataType instanceof JPEGDataType) {
			return true;
		}
		return false;
	}
Returns a list of byte[] containing image data.  The bytes will be either a png, a gif, or
a bitmap
Ghidra/Features/Base/src/main/java/ghidra/program/examiner/ProgramExaminer.java