private void checkGenerateAssembler() throws SleighException {
		if (generated) {
			return;
		}
		generated = true;
		generateAssembler();
	}
Do the actual work to construct an assembler from a SLEIGH language

@throws SleighException if there's an issue accessing the language
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/app/plugin/assembler/sleigh/AbstractSleighAssemblerBuilder.java