/// Functions to find the boundary of a set of nodes.
/// Compute the centrality of nodes and edges in the graph.
/// Compute clustering metrics.
/// Find community sub-structure.
/// Find components of a graph.
/// Functions for finding and evaluating cuts in a graph.
/// Compute resiliency measures of a graph.
/// Compute measures of structural holes in a graph.
/// Compute the shortest paths and path lengths between nodes in the graph.