take_indices

Description:

public bool take_indices (owned BookIndices? indices)

Sets the initial indices to be updated by the this.

If null, then unsets them. The function always discards data previously gathered about the involved contacts, regardless whether the indices changed or not.

The function assumes ownership of the indices.

Parameters:

this	an BookIndicesUpdater
indices	an BookIndices, or `null`

Returns:

whether the indices changed