[CAD Document] Query CADDocument File for download to local

Hi everyone,

Please show me how I can get information CADFiles(Native File / Viewable FIle) of CADDocument

My code as below.

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Item docItem  = myAras.newItem("CAD", "get");

docItem .setAttribute("select", "*");

docItem.setProperty("item_number", "ABC");

Item relItem = myAras.newItem("CADFiles", "get");

relItem .setAttribute("select", "*");

docItem.addRelationship(relItem );