docs: function toObjectArrayOrUndefined(n) {
      if (n === null || n === undefined) { return undefined; }
  
      if (!validation.isArray(n)) {
          try {
              n = JSON.parse(n);
  
              if (!validation.isArray(n)) { return undefined; }
          }
          catch (e) {
              return undefined;
          }
      }
  
      const m = n.map(item => {
          if (!validation.isObject(item)) {
              try {
                  item = JSON.parse(item);
              }
              catch (e) {
                  return undefined;
              }
          }
          return (validation.isObject(item) && item !== null) ? item : undefined;
      }).filter(e => e !== undefined);
  
      return m.length > 0 ? m : undefined;
  }