Lambda expressions support: second round

- typed parameters
- type parameter list
- resolve inside lambda

java/java-psi-api/src/com/intellij/psi/PsiLambdaExpression.java

@@ -22,6 +22,14 @@ import org.jetbrains.annotations.Nullable;
  * Represents a Java lambda expression.
  */
 public interface PsiLambdaExpression extends PsiExpression {
+  /**
+   * Returns this lambda expression's type parameter list (if any).
+   *
+   * @return type parameter list or null.
+   */
+  @Nullable
+  PsiTypeParameterList getTypeParameterList();
+
   /**
    * Returns this lambda expression's parameter list.
    *
@@ -31,7 +39,8 @@ public interface PsiLambdaExpression extends PsiExpression {
   PsiParameterList getParameterList();
 
   /**
-   * Returns PSI element representing lambda expression body: {@link PsiCodeBlock}, {@link PsiExpression}, or null if none.
+   * Returns PSI element representing lambda expression body: {@link PsiCodeBlock}, {@link PsiExpression},
+   * or null if the expression is incomplete.
    *
    * @return lambda expression body.
    */