@Nonnull
	public String mapVariableName(@Nonnull String className, @Nonnull String methodName, @Nonnull String methodDesc,
	                              String name, String desc, int index) {
		String mapped = mappings.getMappedVariableName(className, methodName, methodDesc, name, desc, index);
		if (mapped != null) {
			markModified();
			return mapped;
		}
		// Use existing variable name.
		return name;
	}
@param className
		Internal name of the class defining the method the variable resides in.
@param methodName
		Name of the method.
@param methodDesc
		Descriptor of the method.
@param name
		Name of the variable.
@param desc
		Descriptor of the variable.
@param index
		Index of the variable.

@return Mapped name of the variable, or the existing name if no mapping exists.
recaf-core/src/main/java/software/coley/recaf/services/mapping/WorkspaceBackedRemapper.java