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add

Creates a DocumentTableRelation object for the specified parent and child columns and adds it to the collection.

def add(self, parent_column, child_column):
    ...

Parameter	Type	Description
parent_column	`DocumentTableColumn`	The parent column of the relation.
child_column	`DocumentTableColumn`	The child column of the relation.

Returns: The created DocumentTableRelation.

These names call add too, limited to the overloads listed.

Alias	Accepts
`add_document_table_column`	`add_document_table_column(parent_column, child_column)`