public BinaryReader getFieldReader(long fieldOffset) {
		return reader.clone(structureStart + fieldOffset);
	}
Returns an independent {@link BinaryReader} that is positioned at the start of the
specified field.

@param fieldOffset number of bytes from the beginning of this structure where a field (or
other location of interest) starts
@return new {@link BinaryReader} positioned at the specified relative offset
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/golang/structmapping/StructureContext.java