code: public void setContextKeyNames(java.util.Collection<String> contextKeyNames) {
          if (contextKeyNames == null) {
              this.contextKeyNames = null;
              return;
          }
  
          this.contextKeyNames = new com.amazonaws.internal.SdkInternalList<String>(contextKeyNames);
      }
docs: <p>
  The list of context keys that are referenced in the input policies.
  </p>
  
  @param contextKeyNames
  The list of context keys that are referenced in the input policies.