public int getDescriptorIndex() {
		return descriptorIndex & 0xffff;
	}
The value of the descriptor_index item must be a valid index into the
constant_pool table. The constant_pool entry at that index must be a
CONSTANT_Utf8_info structure representing a method descriptor.
@return a valid index into the constant_pool table
Ghidra/Processors/JVM/src/main/java/ghidra/javaclass/format/constantpool/ConstantPoolMethodTypeInfo.java