KERML_-117 Updated IndexExpressionImpl to return index operator.

Author: seidewitz

org.omg.kerml.xtext/src/org/omg/kerml/xtext/validation/KerMLValidator.xtend

@@ -987,6 +987,11 @@ class KerMLValidator extends AbstractKerMLValidator {
 		}
 	}
 
+	// @Check
+	// def checkIndexExpression(IndexExpression e) {
+	//     // validateIndexExpressionOperator is automatically satisfied
+	// }
+	
 	@Check
 	def checkInvocationExpression(InvocationExpression e) {
 		val type = ExpressionUtil.getExpressionTypeOf(e)
@@ -1037,7 +1042,6 @@ class KerMLValidator extends AbstractKerMLValidator {
 	//     // validateSelectExpressionOperator is automatically satisfied
 	// }
 
-	
 	@Check
 	def checkItemFlow(ItemFlow flow) {
 		// validateItemFlowItemFeature

org.omg.sysml/syntax-gen/org/omg/sysml/lang/sysml/impl/IndexExpressionImpl.java

@@ -1,5 +1,22 @@
-/**
- */
+/*******************************************************************************
+ * SysML 2 Pilot Implementation
+ * Copyright (c) 2025 Model Driven Solutions, Inc.
+ *    
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *  
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *  
+ * @license LGPL-3.0-or-later <http://spdx.org/licenses/LGPL-3.0-or-later>
+ *******************************************************************************/
 package org.omg.sysml.lang.sysml.impl;
 
 import org.eclipse.emf.ecore.EClass;
@@ -15,6 +32,9 @@
  * @generated
  */
 public class IndexExpressionImpl extends OperatorExpressionImpl implements IndexExpression {
+
+	private static final String INDEX_FUNCTION = "#";
+
 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
@@ -34,4 +54,12 @@ protected EClass eStaticClass() {
 		return SysMLPackage.Literals.INDEX_EXPRESSION;
 	}
 
+	/**
+	 * @generated NOT
+	 */
+	@Override
+	public String getOperator() {
+		return INDEX_FUNCTION;
+	}
+
 } //IndexExpressionImpl