Correct import order

spring-expression/src/main/java/org/springframework/expression/spel/ast/CompoundExpression.java

@@ -16,6 +16,8 @@
 
 package org.springframework.expression.spel.ast;
 
+import java.util.StringJoiner;
+
 import org.springframework.asm.MethodVisitor;
 import org.springframework.expression.EvaluationException;
 import org.springframework.expression.TypedValue;
@@ -24,8 +26,6 @@ import org.springframework.expression.spel.ExpressionState;
 import org.springframework.expression.spel.SpelEvaluationException;
 import org.springframework.lang.Nullable;
 
-import java.util.StringJoiner;
-
 /**
  * Represents a DOT separated expression sequence, such as
  * {@code 'property1.property2.methodOne()'}.