public int getFieldsCount() {
		return fieldsCount & 0xffff;
	}
The value of the fields_count item gives the number of field_info
structures in the fields table. The field_info (?4.5) structures represent all
fields, both class variables and instance variables, declared by this class or
interface type.
@return the number of field_info structures in the fields table
Ghidra/Processors/JVM/src/main/java/ghidra/javaclass/format/ClassFileJava.java