text: 
  
  function getHiriarchyMap(rootNode) {
      /*
      This function scans a node hiriatchy recursively and creates a Map by Id of all the nodes of it.
      */
      let hiriatchyMap = new Map()
      evalNode(rootNode)
      return hiriatchyMap
  
      function evalNode(node) {
          if (node === undefined) { return }
  
          hiriatchyMap.set(node.id, node)
  
          /* Now we go down through all this node children */
          let nodeDefinition = APP_SCHEMA_MAP.get(node.type)
          if (nodeDefinition === undefined) { return }
  
          if (nodeDefinition.properties !== undefined) {
              let previousPropertyName // Since there are cases where there are many properties with the same name,because they can hold nodes of different types but only one at the time, we have to avoind counting each property of those as individual children.
              for (let i = 0; i < nodeDefinition.properties.length; i++) {
                  let property = nodeDefinition.properties[i]
  
                  switch (property.type) {
                      case 'node': {
                          if (property.name !== previousPropertyName) {
                              if (node[property.name] !== undefined) {
                                  evalNode(node[property.name])
                              }
                              previousPropertyName = property.name
                          }
                          break
                      }
                      case 'array': {
                          if (node[property.name] !== undefined) {
                              let nodePropertyArray = node[property.name]
                              for (let m = 0; m < nodePropertyArray.length; m++) {
                                  evalNode(nodePropertyArray[m])
                              }
                          }
                          break
                      }
                  }
              }
          }
      }
  }
  
  function getHiriarchyHead(initialNode) { 
      let headNode
      stepBackwards(initialNode)
      return headNode
  
      function stepBackwards(node) {
          if (node === undefined) {return}
          if (node.payload === undefined) {return}
          if (node.payload.parentNode === undefined) {
              headNode = node
          } else {
              stepBackwards(node.payload.parentNode)
          }
      }
  }
  