Make configuration prefix configurable in ConfigurationProviderImpl

I have been trying to run Apache James with default configuration from within a Java "main" method in a Maven Repo. After progressing with keeping configurations in classpath (spring context xmls) and file system (rest of the conf files from distribution placed in ../conf/ dir relative to current working dir) successfully.Now I tried changing the paths and successfully did so in the context xml. Then I stumbled across the following exception:

org.apache.commons.configuration.ConfigurationException: Unable to load configuration for component mailetcontainer.processors
at org.apache.james.container.spring.lifecycle.ConfigurationProviderImpl.getConfiguration(ConfigurationProviderImpl.java:144)
at org.apache.james.container.spring.lifecycle.ConfigurationProviderImpl.afterPropertiesSet(ConfigurationProviderImpl.java:90)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1477)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1417)

After looking into the code I saw the following file where configuration prefix is hard coded to - 'file://conf/'.
http://grepcode.com/file/repo1.maven.org/maven2/org.apache.james/james-server-lifecycle-spring/3.0-beta3/org/apache/james/container/spring/lifecycle/ConfigurationProviderImpl.java#ConfigurationProviderImpl.getConfiguration%28java.lang.String%29

I want to make it configurable so that it can be changed if and as required.