/// True iff the expression contains a `NullaryFunc::MzLogicalTimestamp`.
True iff the expression contains a `NullaryFunc::MzLogicalTimestamp`.
True iff the expression contains a ` NullaryFunc :: MzLogicalTimestamp ` .
pub fn contains_temporal(&mut self) -> bool {
        let mut contains = false;
        self.visit_scalars_mut(&mut |e| contains = contains || e.contains_temporal());
        contains
    }
pub fn contains_temporal ( & mut self ) -> bool { let mut contains = false ; self . visit_scalars_mut ( & mut | e | contains = contains || e . contains_temporal ( ) ) ; contains }
True iff the expression contains a `NullaryFunc::MzLogicalTimestamp`.
True iff the expression contains a ` NullaryFunc :: MzLogicalTimestamp ` .
&mut self