```\nmodifier onlyActiveState(address \_signer) {\n\n    SignerInformation memory si = signerIndex[\_signer];\n    require(si.stage == Stages.Active, "address is not an in3-signer");\n\n    In3Node memory n = nodes[si.index];\n    assert(nodes[si.index].signer == \_signer);\n    \_;\n}\n```\n