public BuildParameterBuilder libClasspath(String libClasspath) {
        this.libClasspath.addAll(splitAndFilterString(System.getProperty(PATH_SEPARATOR), libClasspath));
        return this;
    }
Sets the lib classpath.

@param libClasspath Classpath to set.
@return Returns the builder.
smithy-cli/src/main/java/software/amazon/smithy/cli/BuildParameterBuilder.java