Expose Environment ConfigurationService

AbstractEnvironment delegates to an underlying ConfigurationService when
processing methods such as getProperty(String name, Class<?> targetType)

Accessor methods have been added to the ConfigurableEnvironment
interface that allow this service to be updated or replaced.

org.springframework.core/src/main/java/org/springframework/core/env/AbstractEnvironment.java

@@ -69,7 +69,13 @@ public abstract class AbstractEnvironment implements ConfigurableEnvironment {
 		new PropertyPlaceholderHelper(PLACEHOLDER_PREFIX, PLACEHOLDER_SUFFIX, VALUE_SEPARATOR, false);
 
 
+	public ConversionService getConversionService() {
+		return this.conversionService;
+	}
 
+	public void setConversionService(ConversionService conversionService) {
+		this.conversionService = conversionService;
+	}
 
 	public void addPropertySource(PropertySource<?> propertySource) {
 		propertySources.push(propertySource);

org.springframework.core/src/main/java/org/springframework/core/env/ConfigurableEnvironment.java

@@ -16,6 +16,8 @@
 
 package org.springframework.core.env;
 
+import org.springframework.core.convert.ConversionService;
+
 /**
  * TODO SPR-7508: document
  *
@@ -34,4 +36,7 @@ public interface ConfigurableEnvironment extends Environment, PropertySourceAggr
 	 */
 	void setDefaultProfiles(String... profiles);
 
+	public ConversionService getConversionService();
+
+	public void setConversionService(ConversionService conversionService);
 }