public <T> boolean has(final @NonNull ParserParameter<T> parameter) {
        return this.internalMap.containsKey(parameter);
    }
Check if this instance contains a parameter-object pair for a given parameter

@param parameter Parameter
@param <T>       Parameter type
@return {@code true} if such a pair is stored, else {@code false}
cloud-core/src/main/java/org/incendo/cloud/parser/ParserParameters.java