[1.16.4] - compileJava FAILED / Build failed with an exception

[Kikoz]

Hello!

I updated my mappings from 1.16.2 to 1.16.4 and I'm not able to run the client.

Any help is welcome, thanks!

error: DoubleBlockTypes is not abstract and does not override abstract method getString() in IStringSerializable
public enum DoubleBlockTypes implements IStringSerializable
        ^

Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
1 error

> Task :compileJava FAILED

FAILURE: Build failed with an exception.

 

import net.minecraft.util.IStringSerializable;

public enum DoubleBlockTypes implements IStringSerializable
{
    TOP("top"),
    BOTTOM("bottom");

	   
    private final String name;

    
    DoubleBlockTypes(String name)
    {
        this.name = name;
    }

    public String func_176610_l()
    {
        return this.name;
    }
}

 

[Kikoz]

I just don't get it why it works in 1.16.2 but not in the newest. Thanks for your reply.