def delete_imported_key_material(KeyId=None):
    """
    Deletes key material that you previously imported and makes the specified customer master key (CMK) unusable. For more information about importing key material into AWS KMS, see Importing Key Material in the AWS Key Management Service Developer Guide .
    When the specified CMK is in the PendingDeletion state, this operation does not change the CMK's state. Otherwise, it changes the CMK's state to PendingImport .
    After you delete key material, you can use  ImportKeyMaterial to reimport the same key material into the CMK.
    See also: AWS API Documentation
    
    Examples
    The following example deletes the imported key material from the specified customer master key (CMK).
    Expected Output:
    
    :example: response = client.delete_imported_key_material(
        KeyId='string'
    )
    
    
    :type KeyId: string
    :param KeyId: [REQUIRED]
            The identifier of the CMK whose key material to delete. The CMK's Origin must be EXTERNAL .
            A valid identifier is the unique key ID or the Amazon Resource Name (ARN) of the CMK. Examples:
            Unique key ID: 1234abcd-12ab-34cd-56ef-1234567890ab
            Key ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab
            

    :return: response = client.delete_imported_key_material(
        # The identifier of the CMK whose imported key material you are deleting. You can use the key ID or the Amazon Resource Name (ARN) of the CMK.
        KeyId='1234abcd-12ab-34cd-56ef-1234567890ab',
    )
    
    print(response)
    
    
    """
    pass
