public boolean isLowerPriorityThan(SourceType source) {
		return this.priority < source.priority;
	}
Determines if this source type is a lower priority than the one being
passed to this method as a parameter.
DEFAULT objects are lower priority than ANALYSIS objects which are lower
priority than IMPORTED objects which are lower priority than USER_DEFINED objects.
@param source the source type whose priority is to be compared with this one's.
@return true if this source type is a lower priority.
false if this source type is the same priority or higher priority.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/symbol/SourceType.java