<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">from abc import ABCMeta, abstractmethod


class BaseBinder(object):
    __metaclass__ = ABCMeta

    def __init__(self, root):
        self.root = root

    def bind(self, discharge):
        protected = discharge.copy()
        protected.signature = self.bind_signature(discharge.signature_bytes)
        return protected

    @abstractmethod
    def bind_signature(self, signature):
        pass
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