question: utility method : prefix the key with a subfolder , if this instance assets are stored within subfolder concode_field_sep String CSA concode_elem_sep Logger log concode_elem_sep String awsAccessKey concode_elem_sep String awsRegionName concode_elem_sep AmazonS3 s3Service concode_elem_sep String bucketName concode_elem_sep String awsSecretKey concode_elem_sep String subfolder concode_field_sep void init concode_elem_sep void setAwsSecretKey concode_elem_sep String getAwsAccessKey concode_elem_sep String getAwsSecretKey concode_elem_sep void setSubfolder concode_elem_sep String generateId concode_elem_sep Map about concode_elem_sep void main concode_elem_sep void setAwsRegionName concode_elem_sep String getSubfolder concode_elem_sep void put concode_elem_sep void remove concode_elem_sep void setBucketName concode_elem_sep InputStream get concode_elem_sep void setAwsAccessKey concode_elem_sep String getAwsRegionName concode_elem_sep String getBucketName
target: String function ( String arg0 ) { if ( StringUtils . isNotEmpty ( subfolder ) ) { return subfolder + "srini_string" + arg0 ; } else { return arg0 ; } }