How to use the schema-based-json-editor.isRequired function in schema-based-json-editor

private isRequired(property: string) {
    return common.isRequired(this.props.schema.required, this.value, this.props.schema, property)
  }
  private validate() {

isRequired(property: string) {
    return common.isRequired(this.schema.required, this.value, this.schema, property)
  }
  trackByFunction = (index: number, p: { property: string; schema: common.Schema }) => {

isRequired(property: string) {
    return common.isRequired(this.schema.required, this.value, this.schema, property)
  }
  collapseOrExpand() {