tech_res = Resource("stub.tech", "technique")
pass_st = Statement("method", "")
tech_res.statements.append(pass_st)
mat_st = Statement("material")
pass_st.sub.append(mat_st)
tech_res = Resource("stub.tech", "technique")
pass_st = Statement("method", "")
tech_res.statements.append(pass_st)
mat_st = Statement("material")
pass_st.sub.append(mat_st)