public int getThisClass() {
		return thisClass & 0xffff;
	}
The value of the this_class item must be a valid index into the
constant_pool table. The constant_pool entry at that index must be a
CONSTANT_Class_info (?4.4.1) structure representing the class or interface
defined by this class file.
@return a valid index into the constant_pool table to a CONSTANT_Class_info
Ghidra/Processors/JVM/src/main/java/ghidra/javaclass/format/ClassFileJava.java