public AssemblyResolution backfill(PatternExpression exp, MaskedLong goal, int inslen,
			String description) {
		return backfillBuilder(exp, goal, inslen, description).build();
	}
Build a backfill record to attach to a successful resolution result

@param exp the expression depending on a missing symbol
@param goal the desired value of the expression
@param inslen the length of instruction portion expected in the future solution
@param description a description of the backfill record
@return the new record
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/app/plugin/assembler/sleigh/sem/AbstractAssemblyResolutionFactory.java