core/src/main/java/org/sakaiproject/nakamura/lite/content/InternalContent.java
public void setProperty(String key, Object value) {
        if (readOnly) {
            return;
        }
        if (value == null) {
            throw new IllegalArgumentException("value must not be null");
        }
        Object o = content.get(key);
        if (!value.equals(o)) {
            updatedContent.put(key, value);
            updated = true;
        } else if (updatedContent.containsKey(key) && !value.equals(updatedContent.get(key))) {
            updatedContent.put(key, value);
            updated = true;
        }

    }
public void setProperty(String key, Object value) {
        if (readOnly) {
            return;
        }
        if (value == null) {
            throw new IllegalArgumentException("value must not be null");
        }
        Object o = content.get(key);
        if (!value.equals(o)) {
            updatedContent.put(key, value);
            updated = true;
        } else if (updatedContent.containsKey(key) && !value.equals(updatedContent.get(key))) {
            updatedContent.put(key, value);
            updated = true;
        }

    }
public void setProperty ( String key , Object value ) { if ( readOnly ) { return ; } if ( value == null ) { throw new IllegalArgumentException ( "value must not be null" ) ; } Object o = content . get ( key ) ; if ( ! value . equals ( o ) ) { updatedContent . put ( key , value ) ; updated = true ; } else if ( updatedContent . containsKey ( key ) && ! value . equals ( updatedContent . get ( key ) ) ) { updatedContent . put ( key , value ) ; updated = true ; } }
set a property, creating if it does not exist, overwriting if it does.

@param key
the key for the property
@param value
the value for the property in storage format created with
StorageContentUtils.toStore(). Must not be null.
set a property creating if it does not exist overwriting if it does .