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A task is a language feature that represents a call to a module, with given arguments and other parameters.
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tasks are especially complex arguments so need pre-processing.
keep it short.
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r5 �r/ rj rr rv r5 r5 r6 �_post_validate_loop= s zTask._post_validate_loopc s� i � |dur�� ��fdd�}t |t�r�|D ]X}t |t�rR|D ]}|||| � q<q*�j|dd�}t |t�rt� |O � q*t�d| � q*n8t |t�r�t� � |D ]}|||| � q�n�j|dd�� � S )zu
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template these too early.
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