this.content = content;
    }

    /**
     * Puts multiple values for a given key in the metadata.
     *
     * @param key the metadata key
     * @param values the values to associate with the key
     */
    public void putValues(final String key, final String[] values) {
        metadata.put(key, values);
    }

    /**
     * Puts a single value for a given key in the metadata.
     *

            return data;
        } catch (final MessagingException e) {
            throw new ExtractException(e);
        }
    }

    /**
     * Puts a value into the extract data with appropriate type conversion.
     *
     * @param data the extract data to store the value in
     * @param key the key for the value
     * @param value the value to store
     */