pub fn dependent_dependency_edge_exists(&self, dependent: Dep, dependency: Dep) -> bool {
        match self.hash_list_for(dependency) {
            Some(hash_list) => self.hash_list_contains(hash_list, dependent),
            None => false,
        }
    }
/// Return whether the given dependent-to-dependency edge is in the graph.
Return whether the given dependent-to-dependency edge is in the graph.
Return whether the given dependent - to - dependency edge is in the graph .
pub fn dependent_dependency_edge_exists(&self, dependent: Dep, dependency: Dep) -> bool {
        match self.hash_list_for(dependency) {
            Some(hash_list) => self.hash_list_contains(hash_list, dependent),
            None => false,
        }
    }
pub fn dependent_dependency_edge_exists ( & self , dependent : Dep , dependency : Dep ) -> bool { match self . hash_list_for ( dependency ) { Some ( hash_list ) => self . hash_list_contains ( hash_list , dependent ) , None => false , } }
Return whether the given dependent-to-dependency edge is in the graph.
Return whether the given dependent - to - dependency edge is in the graph .
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