code: public StackInstance withParameterOverrides(Parameter... parameterOverrides) {
          if (this.parameterOverrides == null) {
              setParameterOverrides(new com.amazonaws.internal.SdkInternalList<Parameter>(parameterOverrides.length));
          }
          for (Parameter ele : parameterOverrides) {
              this.parameterOverrides.add(ele);
          }
          return this;
      }
docs: <p>
  A list of parameters from the stack set template whose values have been overridden in this stack instance.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setParameterOverrides(java.util.Collection)} or {@link #withParameterOverrides(java.util.Collection)} if
  you want to override the existing values.
  </p>
  
  @param parameterOverrides
  A list of parameters from the stack set template whose values have been overridden in this stack instance.
  @return Returns a reference to this object so that method calls can be chained together.