static int getMappedByteCount(int mappingScheme) {
		int mappedByteCount = 1;
		if (mappingScheme != 0) {
			mappedByteCount = (mappingScheme >> 7) & 0x7F;
		}
		return mappedByteCount;
	}
Extract the mapping scheme mapped-byte-count from a mappingScheme value.
@param mappingScheme mapping scheme
@return mapped-byte-count (aka schemeDestByteCount)
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/mem/ByteMappingScheme.java