public void setConcat(java.util.Collection<FormInputValueProperty> concat) {
        if (concat == null) {
            this.concat = null;
            return;
        }

        this.concat = new java.util.ArrayList<FormInputValueProperty>(concat);
    }
<p>
A list of form properties to concatenate to create the value to assign to this field property.
</p>

@param concat
       A list of form properties to concatenate to create the value to assign to this field property.
aws-java-sdk-amplifyuibuilder/src/main/java/com/amazonaws/services/amplifyuibuilder/model/FormInputValueProperty.java