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

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