public AssemblyPatternBlock invertMask() {
		int maskLen = this.mask.length;
		byte[] newMask = new byte[maskLen];

		for (int i = 0; i < maskLen; i++) {
			newMask[i] = (byte) ~this.mask[i];
		}

		return new AssemblyPatternBlock(this.offset, newMask, this.vals);
	}
Invert the mask bits of this pattern block

@return a copy of this pattern block with mask bits inverted
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/app/plugin/assembler/sleigh/sem/AssemblyPatternBlock.java