public Escaper buildEscaper() {
            return new Escaper(this);
        }
Builds a {@code SymbolProvider.Escaper} that is used to manually
escape {@code Symbol}s and member names.

@return Returns the built escaper.
smithy-codegen-core/src/main/java/software/amazon/smithy/codegen/core/ReservedWordSymbolProvider.java