* The value is, e.g. 0.05 <br>
     * comment: Boost value for content field in queries.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getQueryBoostContent();

    /**
     * Get the value for the key 'query.boost.content' as {@link java.math.BigDecimal}. <br>
     * The value is, e.g. 0.05 <br>

# Boost value for title field in queries.
query.boost.title=0.5
# Boost value for title field with language in queries.
query.boost.title.lang=1.0
# Boost value for content field in queries.
query.boost.content=0.05
# Boost value for content field with language in queries.
query.boost.content.lang=0.1
# Boost value for important content field in queries.
query.boost.important_content=-1.0