code: public UserPoolType withSchemaAttributes(SchemaAttributeType... schemaAttributes) {
          if (this.schemaAttributes == null) {
              setSchemaAttributes(new java.util.ArrayList<SchemaAttributeType>(schemaAttributes.length));
          }
          for (SchemaAttributeType ele : schemaAttributes) {
              this.schemaAttributes.add(ele);
          }
          return this;
      }
docs: <p>
  A container with the schema attributes of a user pool.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setSchemaAttributes(java.util.Collection)} or {@link #withSchemaAttributes(java.util.Collection)} if you
  want to override the existing values.
  </p>
  
  @param schemaAttributes
  A container with the schema attributes of a user pool.
  @return Returns a reference to this object so that method calls can be chained together.