nl_tokens: Check if a circular link is the only circular link for both its source and target node
pl_tokens: function onlyCircularLink ( link ) { var nodeSourceLinks = link . source . sourceLinks var sourceCount = 0 nodeSourceLinks . forEach ( function ( l ) { sourceCount = l . circular ? sourceCount + 1 : sourceCount } ) var nodeTargetLinks = link . <mask> . targetLinks var targetCount = 0 nodeTargetLinks . forEach ( function ( l ) { targetCount = l . circular ? targetCount + 1 : targetCount } ) if ( sourceCount > 1 || targetCount > 1 ) { return false } else { return true } }