question: checks to see if this key exists in the . properties file . concode_field_sep String fileName concode_elem_sep Logger log concode_elem_sep FileInputStream inputStream concode_elem_sep Properties props concode_elem_sep FileOutputStream outputStream concode_field_sep boolean containsKey concode_elem_sep void save concode_elem_sep double getDouble concode_elem_sep double getDouble concode_elem_sep String getString concode_elem_sep String getString concode_elem_sep Map<String,String> returnMap concode_elem_sep void setInt concode_elem_sep void setDouble concode_elem_sep long getLong concode_elem_sep long getLong concode_elem_sep int getInt concode_elem_sep int getInt concode_elem_sep void setString concode_elem_sep void setLong concode_elem_sep void load concode_elem_sep void removeKey concode_elem_sep boolean keyExists concode_elem_sep boolean getBoolean concode_elem_sep boolean getBoolean concode_elem_sep void close concode_elem_sep void setBoolean
target: String function ( String arg0 ) { return this . props . getProperty ( arg0 ) ; }