public String getArnResourceSubstitutionGetter() {
        return arnResourceSubstitutionGetter;
    }
Sets the arnResourceFqcn

@param arnResourceFqcn The new arnResourceFqcn value.
@return This object for method chaining.
aws-java-sdk-code-generator/src/main/java/com/amazonaws/codegen/model/config/customization/S3ArnableField.java