countFlowcharts() {
    if (this.flowcharts !== undefined && Array.isArray(this.flowcharts))
      return this.flowcharts.length;
    return 0;
  }
/**
   *Return number of flowchart
   *
   * @returns {number} Nulber of flowchart
   * @memberof FlowchartHandler
   */
Return number of flowchart
@returns {number} Nulber of flowchart
@memberof FlowchartHandler
Return number of flowchart @returns { number } Nulber of flowchart @memberof FlowchartHandler
countFlowcharts() {
    if (this.flowcharts !== undefined && Array.isArray(this.flowcharts))
      return this.flowcharts.length;
    return 0;
  }
countFlowcharts ( ) { if ( this . flowcharts !== undefined && Array . isArray ( this . flowcharts ) ) return this . flowcharts . length ; return 0 ; }
Return number of flowchart
 @returns {number} Nulber of flowchart
 @memberof FlowchartHandler
Return number of flowchart @returns { number } Nulber of flowchart @memberof FlowchartHandler