public double getSimilarityThreshold() {
		return queryNearest.thresh;
	}
Gets the threshold under which a potential similar function will not be matched.  This
threshold is for how similar the potential function is. This is a value from 0.0 to 1.0. The 
default value is {@value QueryNearest#DEFAULT_SIMILARITY_THRESHOLD}.

@return threshold under which a potential similar function will not be matched.
Ghidra/Features/BSim/src/main/java/ghidra/features/bsim/query/facade/SFQueryInfo.java