text: var chart_config = {
      chart: {
          container: "#collapsable-example",
          node: {
              HTMLclass: 'node1'
          },
          connectors: {
              type: "curve",
              style: {
                  "stroke-width": 2,
                  "stroke-linecap": "round",
                  "stroke": "#fff"
              }
          }
      },
      nodeStructure: {
          text: {
              name: "firstname lastname"
          },
          link: {
              href: "http://www.google.com"
          },
          image: "https://png.icons8.com/office/100/000000/user-female-skin-type-4.png",
          children: [
              {
                  text: {
                      name: "firstname lastname"
                  },
                  link: {
                      href: "http://www.google.com"
                  },                   
                  image: "https://png.icons8.com/office/100/000000/user-female-skin-type-4.png",
                  children: [
                      {
                          text: {
                              name: "firstname lastname"
                          },
                          link: {
                              href: "http://www.google.com"
                          },
                          image: "https://png.icons8.com/office/100/000000/user-female-skin-type-4.png"
                      }
                  ]
              },
              {
                  text: {
                      name: "firstname lastname"
                  },
                  link: {
                      href: "http://www.google.com"
                  },
                  image: "https://png.icons8.com/office/100/000000/user-female-skin-type-4.png",
                  children: [
                      {
                          text: {
                              name: "firstname lastname"
                          },
                          link: {
                              href: "http://www.google.com"
                          },
                          image: "https://png.icons8.com/office/100/000000/user-female-skin-type-4.png"
                      },
                      {
                          text: {
                              name: "firstname lastname"
                          },
                          link: {
                              href: "http://www.google.com"
                          },
                          image: "https://png.icons8.com/office/100/000000/user-female-skin-type-4.png"
                      }
                  ]
              },
              {
                  text: {
                      name: "firstname lastname"
                  },
                  link: {
                      href: "http://www.google.com"
                  },
                  image: "https://png.icons8.com/office/100/000000/user-female-skin-type-4.png"
              },
              {
                  text: {
                      name: "firstname lastname"
                  },
                  link: {
                      href: "http://www.google.com"
                  },
                  image: "https://png.icons8.com/office/100/000000/user-female-skin-type-4.png"
              }
                  
          ]
      }
  };
  
  /* Array approach
      var config = {
          container: "#collapsable-example",
      },
      malory = {
          image: "img/malory.png"
      },
  
      lana = {
          parent: malory,
          image: "img/lana.png"
      }
  
      figgs = {
          parent: lana,
          image: "img/figgs.png"
      }
  
      sterling = {
          parent: malory,
          childrenDropLevel: 1,
          image: "img/sterling.png"
      },
  
      woodhouse = {
          parent: sterling,
          image: "img/woodhouse.png"
      },
  
      pseudo = {
          parent: malory,
          pseudo: true
      },
  
      cheryl = {
          parent: pseudo,
          image: "img/cheryl.png"
      },
  
      pam = {
          parent: pseudo,
          image: "img/pam.png"
      },
  
      chart_config = [config, malory, lana, figgs, sterling, woodhouse, pseudo, pam, cheryl];
  
  */