(1) A Revenue-officer may summon any person whose attendance he considers necessary for the purpose of any business before him as a Revenue-officer.
    (2) A person so summoned shall be bound to appear at the time and place mentioned in the summons in person or, if the summons so allows, by his recognized agent or a legal practitioner.
    (3) The person attending in obedience to the summons shall be bound to state the truth upon any matter respecting which he is examined or makes statements, and to produce such documents and other things relating to any such matter as the Revenue-officer may require.