Generate Kotlin equals and hashcode methods from Intellij with java 7 methods

Question

I want to generate Kotlin equal and hashcodes using the Java 7 methods just as we usually do for Java. Let's assume that converting the class to a data class is not an option.

In IntelliJ, for Java, I can choose my Equal and HashCode template to implement it with the much more elegant and compact Java 7 version.

However in Kotlin I am redirected directly to a menu to choose the properties.

This is a Java generated one:

@Override
public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;
    Delete delete = (Delete) o;
    return var == delete.var && Objects.equals(foo, delete.foo);
}

@Override
public int hashCode() {
    return Objects.hash(foo, var);
}

This is a Kotlin one:

override fun equals(other: Any?): Boolean {
    if (this === other) return true
    if (javaClass != other?.javaClass) return false

    other as Delete

    if (foo != other.foo) return false
    if (`var` != other.`var`) return false

    return true
}

override fun hashCode(): Int {
    var result = foo.hashCode()
    result = 31 * result + `var`
    return result
}

You may appreciate that the Kotlin version is coding the number hash with prime numbers itself. That is because it is not using Objects.hash or Objects.equals

Note: I am usinng Intellij 2021.1.3 Ultimate

Update:

I have my kotlin target version set to Java 11 with:

        <plugin>
          <artifactId>kotlin-maven-plugin</artifactId>
          <groupId>org.jetbrains.kotlin</groupId>
          <version>${kotlin.version}</version>
          <configuration>
            <compilerPlugins>
              <plugin>spring</plugin>
            </compilerPlugins>
            <jvmTarget>${java.version}</jvmTarget>

I had also updated the main config here: