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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def choose_tool_key(full_configuration, keys):
 """ Select the key for a tool from a list of supported tools. This function is designed to help when multiple keys can be used to specify an option (e.g., during migration from one name to another). The values in keys should be ordered based on preference, as that's the order they'll be checked. If anything other than the first entry is selected, a warning will be displayed telling the user to migrate their configuration. Arguments: full_configuration - the full configuration for a run of the project keys - a list of keys to consider """

    tool_key = _choose_key(full_configuration.config, keys)
    if tool_key != keys[0]:
        full_configuration.executor.warning(
            "{} is deprecated; migrate to {}".format(tool_key, keys[0])
        )
    return tool_key