canMergeValue
open fun canMergeValue(@NonNull key: String, @NonNull value: String, @Nullable attributes: MergeableNodeAttributes): Boolean
open fun canMergeValue(@NonNull key: String, @NonNull value: String, @Nullable attributes: MergeableNodeAttributes, @Nullable filter: MergeableFilter): Boolean
open fun canMergeValue(@NonNull value: Xml, @Nullable attributes: MergeableNodeAttributes, @Nullable filter: MergeableFilter): Boolean