code: public JBBPDslBuilder VarArray(final String name, final String sizeExpression, final String param) {
      return this.CustomArray("var", name, sizeExpression, param);
    }
docs: Create named var array with fixed size.
  
  @param name           name of the array, can be null for anonymous one
  @param sizeExpression expression to calculate size of the array, must not be null.
  @param param          optional parameter for the field, can be null
  @return the builder instance, must not be null