public int getRequiresIndex() {
			return requires_index & 0xffff;
		}
The value of the {@code requires_index} item must be a valid index into
the constant pool.  The entry at that index must be a {@link ConstantPoolModuleInfo} structure
denoting a module that the current module depends on.
@return the requires index
Ghidra/Processors/JVM/src/main/java/ghidra/javaclass/format/attributes/ModuleAttribute.java